what happenes to the volume when water freeze ?
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As water freezes it expands. So, ice has more volume (it takes up more space, but has less density) than water. Share with the children that this is a very special property of water.
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The volume of water increases or water expands when cooled.
- Water is the only known non-metallic substance that expands when it freezes.
- When liquid water is cooled by reducing the temperature, it contracts like other liquids until a temperature of approximately 4 degrees Celsius is reached.
- After that, when the temperature is further decreased, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.
- There is a strong tendency to form a complex network of hydrogen bonds, where each hydrogen atom bonds with two oxygen atoms.
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